Description
The Shure Model SCM800 is a full-featured, eight-channel microphone mixer for sound reinforcement, general audio recording, and audio-visual systems. Any low-impedance, balanced dynamic or condenser microphone, including a wireless microphone system, can be used with the SCM800 mixer.
Each SCM800 accepts up to eight microphone- or line–level inputs and one aux-level input (two input jacks feed the same channel). Up to four SCM800 mixers can be linked to provide up to 32 input channels. Each input channel has a two-band equalizer, switchable microphone- or line-level operation, switchable 48 V phantom power, and a 1/4-inch send/receive insert jack.
Features
- Compatible with Shure SCM410, SCM810 and FP410 automatic microphone mixers
- Adjustable EQ per channel: low-frequency rolloff and high-frequency shelving
- 48 V phantom power selectable for each input
- Active balanced microphone- and line-level inputs and line level output
- Highly RF-resistant chassis and circuitry
- LED indication of channel clipping
- Linking capability for systems up to 32 microphones
- Two Aux-level input jacks that feed one channel
- Insert jack on each channel
- Manual mixing of input channels
- Internal Modification permits 230 V operation (SCM800) or 120 V operation (SCM800E)
- Front-panel headphones output with level control
- Peak-responding output limiter with selectable thresholds and LED indicator
Specifications
Measurement Conditions (unless otherwise specified):
Line voltage 120 Vac, 60 Hz (SCM800) or 230 Vac, 50 Hz
(SCM800E); full gain; 1 kHz.
Source impedances: Mic 150 Ñ, Line 150 ÑÛ¨
Terminations: Line 10 kÑ, Phones 300 Ñ Û¬tip-sleeve and
ring-sleeve), Direct Out 10 kÑÛ¨
Equalization controls adjusted for flat response, Channel 1 gain control full clockwise, other gain controls full counterclockwise
- Frequency Response (Ref .1 kHz, channel controls centered)
- 50 Hz to 20 kHz â±2 dB; -3 dB corner at 25 Hz
- Total Harmonic Distortion
- <0.1% at +18 dBV output level, 50 Hz to 20 kHz (through 20 Hz-20 kHz filter; Input 1 and Master at 5, all other controls full counterclockwise)
- Hum and Noise
- Equivalent Input Noise: –125 dBV (150 Ñ source; through 400 Hz—20 kHz filter)
- Equivalent Input Hum and Noise: (150 Ñ source; through 20 Hz—20 kHz filter)
- –123 dBV
- Output Hum and Noise (through 20 Hz—20 kHz filter; channel controls full counterclockwise):
- Master full counterclockwise: -90 dBV
- Master full clockwise: -62 dBV
- Common Mode Rejection: >70 dB at 1 kHz
- Polarity: Mic/Line, Send inputs to all outputs are non-inverting; Aux input to all outputs is inverting
- Overload and Shorting Protection
- Shorting outputs, even for prolonged periods, causes no damage.
- Microphone inputs are not damaged by signals up to 3 V;
- Line and Monitor inputs by signals up to 20 V
- Equalization
- Low-frequency: 6 dB/octave cut, adjustable corner from 25 to 320 Hz
- High-frequency: â±6 dB at 5 kHz, â±8 dB at 10 kHz, shelving
- Limiter
- Type: Peak
- Threshold: Switchable: off, +4, +8, +16 (dBm at output)
- Attack Time: 2 ms
- Recovery Time: 300 ms
- Indicator: Lights red when limiting occurs
- Input LEDs
- Light at 6 dB below clipping
- Phantom Power: 46 Vdc open-circuit through 6.8 kÑ series resistance per DIN 45 596
- Operating Voltage
- SCM800: 120 Vac rated nominal (see Voltage Selection for 230 Vac operation), 50/60 Hz, 200 mA
- SCM800E: 230 Vac rated nominal (see Voltage Selection for 120 Vac operation), 50/60 Hz, 100 mA
- Temperature Range
- Operating: 0â¡ to 60â¡ C (32â¡ to 140â¡ F )
- Storage: -30â¡ to 70â¡ C (-22â¡ to 158â¡ F)
- Overall Dimensions
- 44.5 mm H x 483 mm W x 317 mm D (13/4 x 19 x 121/2 in.)
- Net Weight
- 4.3 kg (9 lb 9 oz)
- Certifications
- SCM800: UL LISTED (U.S.) and cUL Certified (Canada)
- SCM800E: Conforms to European Union directives; eligible to bear CE marking.
